MATHEMATICS HIGH SCHOOL

In a recent year a letter to Europe from United date cost $ 0.94 to mail a letter mailed within the United States cost $0.44 nancy mailed for $3.70 some to Rourke and some to United States how many letter did she send to europe

Answers

Answer 1
Answer:

Answer: she mailed 3 letters to Europe

Step-by-step explanation:

Let x represent the number of letters that Nancy mailed to Europe.

Let y represent the number of letters that Nancy mailed to United States.

Nancy mailed 5 letters, some to Europe and some to the United States. This means that

x + y = 5

A letter mailed within the United States costs $0.44. A letter to Europe from United date cost $ 0.94 to mail. If the letters that Nancy mailed cost $3.70, then

0.94x + 0.44y = 3.7 - - - - - - - - - - - -1

Substituting x = 5 - y into equation 1, it becomes

0.94(5 - y) + 0.44y = 3.7

4.7 - 0.94y + 0.44y = 3.7

- 0.94y + 0.44y = 3.7 - 4.7

- 0.5y = - 1

y = - 1/ - 0.5 = 2

x = 5 - y = 5 - 2

x = 3

Related Questions

Graph ​ y=−4/7x+1 ​. Please help.
Why is pi the best example of an exponent
Simplify (b^(9))/(b^(11)) and write answer using only positive exponents
I don't know how to do this
How much difference is there between a centi unit and a milli unit?

Find the slope of (-5,28) and (-4,23)

Answers

Answer:

Step-by-step explanation:

Can you help me, I don't understand it....

Answers


Median is the average. I'm pretty sure interquartile is the biggest number out of the two. 

Add the numbers for the first semester up, then divide by the amount of numbers. Do the same for semester two, then pick the correct answer in the multiple choices... For example in semester one you'd divide the added amount by 5.

If i'm wrong i'd like anyone to let me know what I messed up in! :)

Find the value of the variables for each set or similar figures

Answers

Answer:

3

Step-by-step explanation:

Factor completely x2 − 36.(x + 6)(x − 6)

(x + 6)(x + 6)

(x − 6)(x − 6)

Prime

Answers

(x+6)(x-6) is the corrector factoring if what you meant was x^2-36

Answer:

The answer is (x+6)(x-6)

Step-by-step explanation:

One month Leila rented 3 movies and 2 video games for a total of $21 . The next month she rented 8 movies and 4 video games for a total of $49 . Find the rental cost for each movie and each video game.

Answers

x = price movie = 4.25
y = price game = 5.50

Calculate the loss on selling 50 shares of stock originally bought a 13 3/4 force and sold at 12.

Answers


Purchase Stock Costs
50 x 13.75 = 687.50

Sold Stock Costs
50 x 12.00 = 600.00
-------------
Loss - 87.50
Other Questions
A can of soup has a volume of 12 fluid ounces. About how many milliters is this?
| 3x | = 9 | -3r | = 9 b/5 = 1
If a and b are any two real numbers, explain how you calculate the difference . Be sure to include each of the following in your explanation.(a) A description of the relationship between addition and subtraction (b) How you can use a number line to help with the calculation (c) How you can determine the sign of the result
What is 1/3 as a decimal?